Wallpapering process



Patented Aug. 4, 1942 WALLPAPERING PROCESS William T. Drake, Glendale, Calif.

No Drawing. Application January 22, 1941, Serial No. 375,489

(Cl. 2l662) 8 Claims.

My invention relates to a new composition of matter and the method of coating painted interior walls in order that pasted-on wall paper or other covering may more tightly adhere and for a longer time than is possible without the creation of this binding coat.

My invention is entitled process.

The object of my invention is the quick formation of a binding protective coat on the interior painted surfaces of buildings or other painted surfaces of such a character that coatings pasted thereon will adhere permanently without cracking loose. Another object is to do away with the past methods of accomplishing this purpose which have involved steps taking several hours of preparation. For instance, in the past paint has been roughened by a scraping or brushing with abrading brushes, or the surface film has been attacked by corrosive chemicals which it was necessary to remove by sponging or washing, and thereafter a sizing coat has been applied. With these numerous long, tedious, expensive steps intervening before a wall covering could be applied, much time was consumed.

The nature of my invention is such that only one step is necessary in preparing a protective coating. In carrying out the art of my invention I first prepare a solution of potassium carbonate in water of a strength greater than 7 of 1% and less than 50%. This solution I call Stixit. While I find that the solution within the limits of this strength will accomplish my purpose, I prefer to use a solution of 2%. I brush or spray this solution on the painted walls and immediately it is dry, which is usually within fifteen minutes, in dryer climates, I apply wallpaper or other wall coating with an adhering coat of paste. In climates where drying does not take place quickly I find that I may apply the wall paper before complete drying of my preparatory coat takes place.

In thus carrying out my process I find that not only is the time greatly shortened, but that the wall coatings more uniformly and firmly adhere. In attempting to account for this very favorable performance I find that it is due to the free potassium ions acting in base exchange Wallpapering relationship with the underlying painted surface.

I claim:

1. In the interior decorating with wallpaper or other pasted on covering applied over a painted surface the formation of a preparatory potassium containing surface capable of holding dried paste by firm adhesion.

2. In the interior decorating with wallpaper or other pasted-on covering applied over a painted surface the formation of a preparatory potassium containing surface comprising potassium carbonate.

3. In the interior decorating with wallpaper or other pasted-on covering applied over a painted surface the formation of a binding potassium containing surface formed by the application of a solution of potassium carbonate followed by drying on the painted surface.

4. The method comprising altering the surface character of a paint film by treatment with a liquid solution of potassium carbonate under conditions creating a potassium containing surface, and thereafter pasting a covering thereon.

5. The method comprising altering the surface character of a paint film by treatment with a liquid solution of potassium carbonate in which the liquid is water.

6. The method comprising altering the surface character of a paint film by treatment with a water solution of potassium carbonate containing more than of 1% and less than '7. The process of insuring the adhesion of a pasted wall covering to an interior painted surface which comprises brushing a solution of 2% potassium carbonate on the paint film allowing it to dry and then applying a wall covering backed with an adhesive coating of paste and allowing the paste to dry.

8. The process of insuring the adhesion of a pasted wall covering to an interior painted surface which comprises brushing on a solution of potassium carbonate in water and allowing the potassium ions to act in base exchange relationship with the surface of the underlying paint and then applying a wall covering backed with an adhesive coating of paste and allowing the paste to dry on the altered oil surface.

WILLIAM T. DRAKE. 

